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Yeasmin F, Ali MA, Rahman MA, Sultana T, Rahman MQ, Ahmed ANN. A comparative study of chemical and immunological method of fecal occult blood test in the diagnosis of occult lower gastrointestinal bleeding. ACTA ACUST UNITED AC 2014; 39:52-6. [DOI: 10.3329/bmrcb.v39i2.19641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Fecal occult blood test is the most widely used screening test for diagnosis of gastrointestinal bleeding disorders specially colorectal carcinoma. Among the various methods of fecal occult blood tests, chemical method is being used commonly, but the method has some drawbacks like low participation rate, high false positive rate, low sensitivity etc. To overcome these short comings, newer immunological method was introduced. This study evaluated the role of immunological method of fecal blood test in the diagnosis of occult lower GIT bleeding. Stool samples from two hundred patients were examined by both chemical and immunological method. The patients who were positive by any or both methods of occult blood test, were advised for colonoscopy. During colonoscopy tissues were taken for histopathology which was the gold standard of this study. Among 110 OBT positive patients pathological lesions were detected in 65 patients by colonoscopy and histopathology. The diseases detected by colonoscopy and histopathology 18 colorectal polyp, 8 colorectal cancer, 24 ulcerative lesions and 5 inflammatory bowel disease etc. Regarding comparative analysis of chemical and immunological method, the higher sensitivity (95.4% vs. 49.2%), specificity (44.4% vs. 37.8%), accuracy (74.5% vs. 44.5%), PPV (71.3% vs. 53.3%) and NPV (87% vs. 34%) of immunological method than chemical method was observed. Thus immunological method of fecal occult blood test was appeared to be a better alternative to conventional chemical method of fecal occult blood test in the diagnosis of occult lower GIT bleeding. DOI: http://dx.doi.org/10.3329/bmrcb.v39i2.19641 Bangladesh Med Res Counc Bull 2013; 39: 52-56
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Sultana GS, Haque SA, Sultana T, Ahmed AN. Value of red cell distribution width (RDW) and RBC indices in the detection of iron deficiency anemia. Mymensingh Med J 2013; 22:370-376. [PMID: 23715364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Iron deficiency anemia is the common problem during pregnancy. Detection of iron deficiency early during pregnancy can reduce maternal and child mortality and morbidity. Red cell distribution width is a new routine parameter in fully automated hematology analyzer that can give the idea of early iron deficiency before other test. It gives the idea of red cell size variation which is the earliest morphologic changes in iron deficiency anemia. In prelatent and latent stage of iron deficiency MCV are normal. Whereas in latent stage Red Cell Distribution Width (RDW) would be expected to increase because of a microcytic population of cells appears in the blood. This study evaluates the role of red cell distribution width and RBC indices in determining iron deficiency early and provide reliable and useful technique. In this study 190 pregnant women were included. RDW, MCV, MCH, MCHC and iron profile were done. RDW compared with MCV, MCH and MCHC in various stages of iron deficiency. In latent stage of iron deficiency higher RDW was found significant than MCV, MCH, MCHC (p<0.05). In this study RDW had sensitivity 82.3% and specificity 97.4%. Whereas MCV, MCH and MCHC had 29.2%, 68.1% and 15% sensitivity but specificity was 98.7%, 83.1% and 96.1% in the detection of iron deficiency. Iron deficiency anaemia without other complicating disease could be screened out early by increased RDW when RBC indices were normal.
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Islam MS, Sultana T, Paul D, Huq AHMZ, Chowdhury AA, Ferdous C, Ahmed ANN. Intraoperative serum parathyroid hormone level is an indicator of hypocalcaemia in total thyroidectomy patients. ACTA ACUST UNITED AC 2013; 38:84-9. [DOI: 10.3329/bmrcb.v38i3.14331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Postoperative hypocalcaemia is the most frequent and common complication after total thyroidectomy. It is necessary to diagnose or to predict hypocalcaemia immediately after total thyroidectomy for minimizing complications. A prospective observational study was carried out in the Department of Clinical Pathology in collaboration with Department of Microbiology & Immunology, Department of Surgery, Department of Otolaryngology, Bangabandhu Sheikh Mujib Medical University (BSMMU) and Department of Otolaryngology, Dhaka Medical College & Hospital (DMC&H), Dhaka, during the period of September 2010 to August 2011 to evaluate intraoperative (20 minutes after total thyroidectomy) parathyroid hormone (PTH) measurement as a predictor of post thyroidectomy hypocalcaemia. Total 65 patients were enrolled in this study those came for total thyroidectomy. Postoperative hypocalcaemia developed in 25 cases. Intraoperative PTH was assessed and significant correlation was found between intraoperative PTH level and development of hypocalcaemia. The sensitivity, specificity, accuracy, positive predictive value, negative predictive value of intraoperative serum PTH for prediction of post total thyroidectomy hypocalcaemia were 84.0%, 85.0%, 84.6%, 77.8%, and 89.5% respectively. Because of the high sensitivity, specificity and accuracy of intraoperative serum PTH of this study, the early prediction of hypocalcaemia could be made by single assay of intraoperative serum PTH level at 20 minutes after total thyroidectomy. DOI: http://dx.doi.org/10.3329/bmrcb.v38i3.14331 Bangladesh Med Res Counc Bull 2012; 38(3): 84-89 (December)
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Sattar MA, Hadi HI, Homaira R, Sultana T. Management of bilateral congenital choanal atresia. Mymensingh Med J 2013; 22:80-83. [PMID: 23416814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This study was conducted to adopt better management technique for better outcome of bilateral congenital choanal atresia. Six consecutive neonates with bilateral congenital choanal atresia were included in this study. Emergency and elective management was done in various ways. Postoperative outcome was assessed clinically and endoscopically. Surgical management was done in two approaches. Three done in endoscopic transnasal approach and another 3 in transpalatine approach. Patient with endoscopic approach recovered earlier with minimum morbidity. Application of mitomycin-c minimizes granulation tissue and adhesions. Management of bilateral congenital choanal atresia is better by endoscopic transnasal approach with application of mitomycin-c.
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Khan M, Sultana T. O363 IS DELAYED ICU REFERRAL ASSOCIATED WITH ADVERSE MATERNAL OUTCOME? A STUDY AT TERTIARY LEVEL HOSPITAL IN INDIA. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)60793-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sultana T, Gupta U. O661 SIGNIFICANCE OF PREOPERATIVE SERUM VASCULAR ENDOTHELIAL GROWTH FACTOR (VEGF) LEVELS & COLOR DOPPLER INDICES IN PREDICTION OF MALIGNANCY IN ADNEXAL MASSES. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61091-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sultana GS, Haque SA, Sultana T, Rahman Q, Ahmed ANN. Role of red cell distribution width (RDW) in the detection of iron deficiency anaemia in pregnancy within the first 20 weeks of gestation. ACTA ACUST UNITED AC 2012; 37:102-5. [PMID: 22352230 DOI: 10.3329/bmrcb.v37i3.9122] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Iron deficiency anemia is common problem during pregnancy. Red cell size variation (anisocytosis) is the earliest morphologic changes in iron deficiency anemia. Red cell distribution width is a quantitative measure of red cell size variation and it can give the idea of early iron deficiency before other test to become positive. 190 pregnant women were included in this study. Red cell distribution width was compared between iron deficient & non-iron deficient pregnant women. Red cell distribution width also compared with Hb level, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration and peripheral blood film in prelatent iron deficiency, latent iron deficiency, mild and moderate iron deficiency anemia. Red cell distribution width had sensitivity 82.3% and specificity 97.4%. Whereas Hb level, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration and peripheral blood film all had 56.6%, 29.2%, 68.1%, 15% and 38.9% sensitivity but specificity was 90.9%, 98.7%, 83.1%, 96.1% and 98.7% in the detection of iron deficiency. Red cell distribution width appears to be a reliable and useful parameter for detection of iron deficiency during pregnancy.
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Khair KB, Rahman MA, Sultana T, Roy CK, Rahman MQ, Ahmed AN. Early diagnosis of neonatal septicemia by hematologic scoring system, C-reactive protein and serum haptoglobin. Mymensingh Med J 2012; 21:85-92. [PMID: 22314460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Neonatal septicemia is one of the major health problems throughout the world. Infections are frequent and important cause of morbidity and mortality in neonatal period. The objective of the present study was to find out the role of hematologic scoring system (HSS), C-reactive protein (CRP) and haptoglobin in the early diagnosis of neonatal septicemia. This is a descriptive consisted of 100 neonates admitted at neonatal ICU, BSMMU, who were clinically suspected sepsis. The hematological parameter, C-reactive protein and haptoglobin were measured in all cases. Blood culture was done as the gold standard for diagnosis of neonatal septicemia. There were 12 out of 100 neonates (12%) who had culture proven sepsis and they were predominantly preterm and very low birth weight. On evaluation of various hematological parameters total leukocyte count, total neutrophil count, immature to total neutrophil ratio (>0.2), immature to mature neutrophil ratio (>0.3), total immature count, platelet count were found to have optimal sensitivities and negative predictive values. Using these values hematologic scoring system (HSS) was formulated according to Rodwell et al. Score ≥4 was found sensitivity of 100%, specificity of 60%. C-reactive protein (CRP) had sensitivity of 75%, specificity of 74%. Haptoglobin was not found significant (p<0.05) with sepsis and sensitivity was very low. But Combination of score ≥4 and CRP showed sensitivity of 75%, specificity 85%, positive predictive value (PPV) 41% and negative positive value (NPV) 96%. HSS and CRP are useful test to differentiate the septicemic from non septicemic neonates and also provide a effective guideline to make decisions regarding judicious use of antibiotic therapy. But haptoglobin level was not found useful for screening of sepsis.
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Yesmin S, Sultana T, Roy CK, Rahman MQ, Ahmed ANN. Immature reticulocyte fraction as a predictor of bone marrow recovery in children with acute lymphoblastic leukaemia on remission induction phase. ACTA ACUST UNITED AC 2011; 37:57-60. [PMID: 21877606 DOI: 10.3329/bmrcb.v37i2.8435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Immature reticulocyte fraction a new routine parameter in the hematology analyzer can give the idea of the earliest morphologic change of bone marrow recovery before other test become positive after chemotherapy. A prospective observational study was carried out in the Department of Clinical Pathology in collaboration with Paediatric Haematology and Oncology, Bangabandhu Sheikh Mujib Medical University during a period of one year starting from October 2009 to September 2010 to evaluate the bone marrow recovery in children with acute lymphoblastic leukaemia by automated reticulocyte analysis. Total fifty patients were enrolled in this study on remission induction phase. All patients were between 8 months to 15 years age range with a mean age of 5.5 +/- 3.2. At the end of the study out of 50 cases, 52% patients showed early immature reticulocyte fraction recovery and concluded that the immature reticulocyte fraction parameter showed earlier haematopoietic recovery than the current practice of absolute neutrophil count recovery.
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Qureshi MN, Stecher G, Sultana T, Abel G, Popp M, Bonn GK. Determination of carbohydrates in medicinal plants--comparison between TLC, mf-MELDI-MS and GC-MS. PHYTOCHEMICAL ANALYSIS : PCA 2011; 22:296-302. [PMID: 21438049 DOI: 10.1002/pca.1280] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 08/11/2010] [Accepted: 08/16/2010] [Indexed: 05/30/2023]
Abstract
INTRODUCTION Quality control in the pharmaceutical and phytopharmaceutical industries requires fast and reliable methods for the analysis of raw materials and final products. OBJECTIVE This study evaluates different analytical approaches in order to recognise the most suitable technique for the analysis of carbohydrates in herbal drug preparations. METHODOLOGY The specific focus of the study is on thin-layer chromatography (TLC), gas chromatography (GC), and a newly developed mass spectrometric method, i.e. matrix free material enhanced laser desorption/ionisation time of flight mass spectrometry (mf-MELDI-MS). Samples employed in the study were standards and microwave-assisted water extracts from Quercus. RESULTS TLC analysis proved the presence of mono-, di- and trisaccharides within the biological sample and hinted at the existence of an unknown carbohydrate of higher oligomerisation degree. After evaluation of different derivatisation techniques, GC-MS confirmed data obtained via TLC for mono- to trisaccharides, delivering additionally quantified values under a considerable amount of time. A carbohydrate of higher oligomerisation degree could not be found. The application of mf-MELDI-MS further confirmed the presence of carbohydrates up to trisaccharides, also hinting at the presence of a form of tetrasaccharide. Besides this information, mf-MELDI-MS delivered further data about other substances present in the extract. Quantitative determination resulted in 1.750, 1.736 and 0.336 mg/mL for glucose, sucrose and raffinose respectively. CONCLUSION Evaluation of all three techniques employed, clearly proved the heightened performance of mf-MELDI-MS for the qualitative analysis of complex mixtures, as targets do not need modification and analysis requires only a few minutes. In addition, GC-MS is suitable for quantitative analysis.
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Sultana T, Sultana T, Rahman MQ, Rahman F, Islam MS, Ahmed AN. Value of dysmorphic red cells and G1 cells by phase contrast microscopy in the diagnosis of glomerular diseases. Mymensingh Med J 2011; 20:71-77. [PMID: 21240166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The morphology of red cells by phase-contrast microscopy (PCM) is a useful diagnostic marker for glomerular haematuria. This study evaluated the value of urinary dysmorphic red cells and G1 cells (special type of dysmorphic red cell) count by PCM providing a simple, cost effective and low risk technique in the diagnosis of glomerular diseases. Urine samples of 120 patients with haematuria and proteinuria were examined and the percentage of dysmorphic red cells and G1 cells were calculated. Cases were divided into two groups; group I (>20% dysmorphic red cells- glomerular group) and group II (≤20% dysmorphic red cells as non glomerular group). Renal histopathology was used as the gold standard method for the diagnosis of glomerulonephritis. Results from PCM showed a sensitivity of 92.7%, specificity 100% by the detection of dysmorphic red cell while by the detection of G1 cells, a sensitivity of 97.6% and specificity 100% were observed. The percentage of G1 cells is superior to counting dysmorphic red cells. The high sensitivity of phase contrast microscopy confirms its usefulness for the detection of dysmorphic red cells and G1 cells that can guide clinicians in the identification of the site of haematuria using non invasive tests.
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Nesa A, Munir SF, Sultana T, Rahman MQ, Ahmed AN. Role of discrimination indices in differentiation of beta thalassaemia trait and iron deficiency anaemia. Mymensingh Med J 2011; 20:110-114. [PMID: 21240173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Iron deficiency anaemia (IDA) and beta thalassaemia trait (BTT) are the most common causes of microcytic hypochromic anaemias. Several discrimination indices have been introduced to discriminate quickly these similar entities via parameters obtained from automated cell counter. The purpose of the study was to evaluate the value of five discrimination indices in differentiation of BTT and IDA. This study consists of 57 cases of BTT and 72 cases of IDA. Five discrimination indices evaluated in this study for differentiation of BTT and IDA were red blood cell (RBC) count, red blood cell distribution width index (RDWI), Green & King Index (G & K), Mentzer index (MI) and England & Fraser (E & F) index. Sensitivity, specificity, positive and negative predictive values and Youden's index (YI) had been calculated. RBC count and RDWI appears to be reliable and useful index for the differentiation of BTT and IDA, as both of the indices had more than 80% sensitivity, specificity in differentiation of IDA and BTT. Patients with microcytic hypochromic anaemia could be easily screened out for BTT and IDA through these discrimination indices in the absence of other complicated diseases.
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Sultana T, Georgiev G, Baird R, Auner G, Newaz G, Patwa R, Herfurth H. Study of two different thin film coating methods in transmission laser micro-joining of thin Ti-film coated glass and polyimide for biomedical applications. J Mech Behav Biomed Mater 2009; 2:237-42. [DOI: 10.1016/j.jmbbm.2008.07.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2008] [Revised: 07/30/2008] [Accepted: 07/31/2008] [Indexed: 11/28/2022]
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Mayer R, Stecher G, Wuerzner R, Silva RC, Sultana T, Trojer L, Feuerstein I, Krieg C, Abel G, Popp M, Bobleter O, Bonn GK. Proanthocyanidins: target compounds as antibacterial agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:6959-6966. [PMID: 18636738 DOI: 10.1021/jf800832r] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Grape seeds accumulate in huge quantities as byproduct during wine production and are therefore a cheap source for pharmacologically active agents. However, studies prove poor antibacterial activity, and results of analyses are sometimes contradictory. The aim of this study was, thus, to determine the antibacterial activity of grape seed extracts with special focus on the chromatographic characterization of active fractions. In the course of these investigations, extraction protocols were optimized so that microwave-assisted extraction (MAE) guaranteed highest preconcentration efficiency. Proanthocyanidins, monomeric flavonoid aglycones, as well as some of their glycosides could be identified within yielded extracts via high-performance liquid chromatography-mass spectrometry (HPLC-MS). By that means the coherence number of possible isomers of procyanidins was approximated by a newly developed equation. As far as antibacterial activity determined via screening tests is concerned, the extracts generally have been found to be positively responsive toward 10 different gram-positive and gram-negative bacteria strains. After fractionation of the raw extracts, proanthocyanidins P2, P3, P4 and gallate esters P2G and P3G (P = proanthocyanidin consisting of catechin and epicatechin units, n = oligomerization degree, G = gallate ester) were determined as active antibacterial agents toward 10 different pathogens. Only moderate activity was found for monomeric flavonoid fractions.
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Sultana T, Stecher G, Mayer R, Trojer L, Qureshi MN, Abel G, Popp M, Bonn GK. Quality assessment and quantitative analysis of flavonoids from tea samples of different origins by HPLC-DAD-ESI-MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:3444-3453. [PMID: 18442252 DOI: 10.1021/jf703625r] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Components of green tea ( Camellia sinensis) have been of considerable interest in recent years because of their potential utility as pharmaceutical agents, particularly for their antioxidant and anticarcinogenic activity. Responding to the increasing scientific validation of numerous health benefits of tea, a comprehensive approach was adopted to carry out analysis for the quality assessment of flavonoids in tea samples of different origins. For this purpose, extraction, separation, and mass spectrometric parameters were optimized. Extraction methods evaluated include reflux extraction, a modified accelerated solvent extraction (ASE), namely, Aquasolv extraction, and microwave-assisted extraction (MAE) using different percentages of solvents. Separation was performed by a specifically developed reversed phase high-performance liquid chromatography (RP-HPLC) method using different C18 and C8 stationary phases. Optimization of extraction techniques clearly proved the performance of MAE, which delivered highest yields in a very short time. Additionally, the comparison with Aquasolv extraction provided new insights, as variations in quantified amounts of target compounds between the extracts could be explained on the basis of thermal degradation and epimerization phenomena. Especially the epimerization phenomenon for catechin/epicatechin oligomers, that is, of procyanidins P 2 and P 3, was observed for the first time. Finally, an optimized extraction and separation system was used for qualitative and quantitative investigations of compounds from different green tea samples from Ceylon (cultivated under biologically controlled conditions), Japan, India, and China as well as from one black tea sample from India.
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Rahman MM, Sultana T. Radiative Heat Transfer Flow of Micropolar Fluid with Variable Heat Flux in a Porous Medium. ACTA ACUST UNITED AC 2008. [DOI: 10.15388/na.2008.13.1.14590] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A two-dimensional steady convective flow of a micropolar fluid past a vertical porous flat plate in the presence of radiation with variable heat flux has been analyzed numerically. Using Darcy-Forchheimer model the corresponding momentum, microrotation and energy equations have been solved numerically. The local similarity solutions for the flow, microrotation and heat transfer characteristics are illustrated graphically for various material parameters. The effects of the pertinent parameters on the local skin friction coefficient, plate couple stress and the heat transfer are also calculated. It was shown that large Darcy parameter leads to decrease the velocity while it increases the angular velocity as well as temperature of the micropolar fluids. The rate of heat transfer in weakly concentrated micropolar fluids is higher than strongly concentrated micropolar fluids.
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Abdullah A, Khanam A, Biswas S, Niloy A, Shahin M, Murshed K, Sultana T. Medical causes and histological pattern of glomerulonephritis. Mymensingh Med J 2008; 17:38-41. [PMID: 18285729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Glomerulonephritis (GN) is one of the commonest causes of chronic renal failure (CRF) and end stage renal failure (ESRF). The outcome largely depends on the underlying medical cause, clinical findings and histological appearance. 1188 patients were taken in this study. Of these, 980 had primary and 208 secondary GN. Commonest histological types of primary GN were mesangial proliferative glomerulonephritis (31%) and membranous nephropathy (21%). Among patients with secondary GN, predominant cause was lupus nephritis (76%) followed by poststreptococcal GN (18%). Clinically, nephrotic syndrome was present in 54%, hypertension in 39% and renal failure in 28%. But clinical pictures were variable among different histological types of GN.
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Sultana T, Rahman AJEN. Cytological grading of duct cell carcinoma, NOS of breast and its correlation with histological grading. BANGLADESH MEDICAL RESEARCH COUNCIL BULLETIN 2006; 32:49-54. [PMID: 17663360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Fine needle aspiration cytology is a widely practiced technique in the diagnosis of breast carcinoma and it is the only, diagnostic procedure performed before definitive treatment, at most institutions. While the histological grading of Duct Cell Carcinoma (DCC), NOS is done routinely in many centers worldwide the cytopathological grading of DCC, NOS is not commonly done. Grading of breast carcinoma, while the tumour is still in vivo, would be the most ideal and desirable situation, as it would be helpful in the selection of appropriate therapy for the patient. This study was undertaken with the aim to determine the grade of DCC, NOS by simple cytological scoring system as a method of predicting histological grade. We selected 80 cases of DCC, NOS which were initially diagnosed by Fine Needle Aspiration Cytology (FNAC) with subsequent histological confirmation. For cytological grading Papanicolou's stained smears and for histological grading Haematoxylin and Eosin stained sections were examined under light microscope. For histological grading Scraff Bloom Richardson's grading and for cytological grading Robinson's grading were followed. In both system grading were grade I, grade II and grade III of DCC, NOS. On cytological grading 39 (48.8%) cases were grade-I, 38 (47.5%) cases were grade-II and 3 (3.8%) cases were grade-III. On histological grading 33 (41.3%) cases were grade-I, 39 (48.8%) cases were grade-II and 8 (10%) cases were grade-III. In this study cytological grade correlated with histological grade in 69 (86.3%) cases. For grade-I tumour, sensitivity was 96.96%, efficiency was 94%. For grade-II tumour the sensitivity was 87.18% and efficiency was 77%. For grade-III tumour the sensitivity was 37.50% and efficiency was 23%. The overall accuracy was 96.3%. Significant association between histological and cytological grading of breast carcinoma, NOS was noted. Our observations in this study revealed that grading of duct cell carcinoma, NOS on FNAC material can be a useful in preoperative assessment of DCC, NOS prognosis and can be useful as an alternative to histological grading when neoadjuvant therapy is planned.
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Newaz G, Mian A, Sultana T, Mahmood T, Georgiev DG, Auner G, Witte R, Herfurth H. A comparison between glass/polyimide and titanium/polyimide microjoint performances in cerebrospinal fluid. J Biomed Mater Res A 2006; 79:159-65. [PMID: 16779855 DOI: 10.1002/jbm.a.30709] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Assessment of neural biocompatibility requires that materials be tested with exposure in neural fluids. Laser bonded microjoint samples made from Ti coated glass substrate and polyimide film (GPI) and titanium foil and polyimide film (TIPI) were evaluated for mechanical performance before and after exposure in artificial cerebrospinal fluid (CSF) for two, four, and 12 weeks at 37 degrees C. These samples represent a critical feature, i.e., the microjoint-a major weakness in the bioencapsulation system. Both material systems showed initial degradation up to 4 weeks which then stabilized afterwards and retained similar strength until 12 weeks. The TIPI system appears to exhibit better overall performance with less degradation compared to its as-received strength. The CSF exposed TIPI samples predominantly failed at the interface, while GPI samples had mixed glass and polyimide substrate and interface failure. The amount of glass failure decreases and interface failure increases with increase in CSF exposure time. The failure mechanism of the as-received (not exposed to CSF) GPI samples under tension was predominantly flexure type failure of the glass substrate.
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Sultana T, Svechnikov KV, Gustafsson K, Wahlgren A, Tham E, Weber G, Soder O. Molecular identity, expression and functional analysis of interleukin-1alpha and its isoforms in rat testis. Asian J Androl 2004; 6:149-53. [PMID: 15154090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
Interleukin-1alpha (IL-1alpha) is a proinflammatory cytokine that has also been found to act as a paracrine mediator involved in the regulation of testicular functions. The present review provides an overview of the role of IL-1alpha in testicular physiology. Bioactive IL-1alpha isolated from adult rat testis was found to consist of three distinct immunoreactive protein species with apparent sizes of 45, 24 and 19 kDa. These isoforms showed bioactivity in a thymocyte proliferation and steroidogenesis assays with different biopotencies. The background of the molecular heterogeneity and processing, secretion and regulation of the isoforms of testicular IL-1alpha are discussed. All three isoforms have been found to be secreted into the testis tubular lumen and interstitial space. We have provided evidence that IL-1alpha is a paracrine factor that may be of importance in, e.g., the regulation of Leydig cell steroidogenesis. Pathophysiologically, testicular IL-1alpha may contribute to testicular relapse of acute lymphocytic leukemia in boys.
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Svechnikov K, Petersen C, Sultana T, Wahlgren A, Zetterström C, Colón E, Bornestaf C, Söder O. The Paracrine Role Played by Interleukin-1α in the Testis. ACTA ACUST UNITED AC 2004; 4:67-74. [PMID: 15032628 DOI: 10.2174/1568008043340026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Interleukin-1alpha (IL-1alpha) plays an important role(s) in the regulation of immune and inflammatory responses. The testis is an immunologically privileged organ and the variety of effects exerted by IL-1alpha on this organ have yet to be explored in detail. The aim of the present review is to describe our current view of the paracrine role played by IL-1alpha in testicular physiology. Testicular IL-1alpha is expressed during development, primarily in Sertoli cells, appearing in rats for the first time 20 days after birth. This cytokine is microheterogeneous, consisting of three molecular species with molecular weights of 45, 24 and 17 KDa. The 17 KDa form represents mature IL-1alpha, while the 24-KDa IL-1alpha has been shown by our research group to be an alternately spliced form of the 45-KDa pro-IL-1alpha. IL-1alpha was observed to stimulate the proliferation of immature Sertoli cells with higher efficacy than FSH. IL-1alpha was also found to exert mitogenic effects both on isolated peritubular cells and germ cells. Furthermore, isoforms of IL-1alpha were seen to stimulate basal testosterone production in immature Leydig cells, but not in the corresponding adult cells. This effect involved induction of the steroidogenic acute regulatory (StAR) protein and positively regulation by p38 MAPK. Recently, we have observed positive interactions between IL-1alpha and hormones of the GH/IGF-I system that lead to enhanced androgen production by the Leydig cell. In conclusion, our findings suggest that isoforms of IL-1alpha may serve as paracrine mediators, alone or in concert with other factors, that support proper testicular cell functioning and, thereby, reproduction and fertility.
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Mamun M, Billah M, Ashek M, Ahasan M, Hossain M, Sultana T. Evaluation of Diuretic Activity of Ipomoea aquatica (Kalmisak) in Mice Model Study. JOURNAL OF MEDICAL SCIENCES 2003. [DOI: 10.3923/jms.2003.395.400] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Shahid A, Siddiqui AA, Sultana T, Qureshi H, Waqar MA, Zuberi SJ. Determination of alpha-1 antitrypsin genetic deficiency in duodenal ulcer by polymerase chain reaction. J PAK MED ASSOC 2002; 52:545-8. [PMID: 12627901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
OBJECTIVE To confirm alpha-1-AT deficiency status in duodenal ulcer using a combination of PCR and restricted enzyme digestion. METHODS Fifty patients with endoscopically proven duodenal ulcer and hundred controls with no signs of the disease were included. Alpha-1-AT phenotypes were confirmed by polymerase chain reaction followed by restriction enzyme digestion. RESULTS Alpha-1-AT concentration in duodenal ulcer patients showed a mean value of 2.12 +/- 0.11 g/l (range: 0.52-3.95 g/l, p < 0.05). In controls this was 2.47 +/- 0.08 g/l (range: 0.52-5.0 g/l). Among the controls 70% had the MM phenotype, 28% M1 M2 and 2% FM. In duodenal ulcer, MM predominates (70%), followed by M1 M2 (18%), SS (4%), SZ (4%), ZZ (2%) and MZ (2%). CONCLUSION Alpha-1 AT deficiency was found in 10% of duodenal ulcer patients. DNA analysis more accurately resolved the phenotypes as S and Z mutations.
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Svechnikov KV, Sultana T, Söder O. Age-dependent stimulation of Leydig cell steroidogenesis by interleukin-1 isoforms. Mol Cell Endocrinol 2001; 182:193-201. [PMID: 11514054 DOI: 10.1016/s0303-7207(01)00554-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Different isoforms of testicular interleukin-1 (IL-1) were analysed to determine whether there were differences in the ability to modulate rat Leydig cell steroidogenesis in vitro. Rat 17K IL-1alpha and IL-1beta, 32K IL-1alpha precursor (32proIL-1alpha) and a 24K splice variant (24proIL-1alpha) stimulated testosterone production by Leydig cells from 40- but not 80-day-old rats. The potency of the isoforms was IL-1alpha>IL-1beta>32proIL-1alpha>24proIL-1alpha, IL-1alpha being 50-fold more potent than IL-1beta. IL-1 receptor antagonist reversed the effects and IL-1 receptor type I mRNA was expressed by the responding Leydig cells, indicating a receptor mediated action. Inhibition of PKA and Ca(2+) channels abolished IL-1-induced steroidogenesis, while inhibition of PKC had no significant effect. Except for 24proIL-1alpha which was stimulatory, all IL-1 isoforms suppressed hCG-driven testosterone production. This inhibitory effect was abolished by androstendione, suggesting that P450c17 was suppressed by IL-1. Our results indicate that IL-1 plays a paracrine role in the regulation of Leydig cell steroidogenesis.
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Wahab-Wahlgren A, Holst M, Ayele D, Sultana T, Parvinen M, Gustafsson K, Granholm T, Söder O. Constitutive production of interleukin-1alpha mRNA and protein in the developing rat testis. INTERNATIONAL JOURNAL OF ANDROLOGY 2000; 23:360-5. [PMID: 11114982 DOI: 10.1046/j.1365-2605.2000.t01-1-00253.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Interleukin-1 (IL-1), a multifunctional cytokine produced mainly by activated macrophages, is also produced in the intact testis. Rat testicular IL-1 was found to be identical to IL-1alpha, judged by immunoneutralization of the bioactive protein and sequence comparison of cloned rat testicular and macrophage pro-IL-1alpha cDNA. Testicular IL-1alpha mRNA was first demonstrated on postnatal day 15, and the corresponding bioactive protein from day 20. IL-1alpha mRNA was still low on day 20, but then increased rapidly in parallel with the bioactive protein to establish a plateau level from day 25. In adult testes, IL-1alpha mRNA and immunoreactive protein were low in stage VII of the seminiferous epithelial cycle, whereas other stages showed a clearly detectable expression. In the adult testis, the concentration of IL-1alpha was 75 pg/mg testicular protein (approximately 200 pM). In conclusion, production of testicular IL-1alpha is developmentally and stage-dependently regulated, probably at the transcriptional level, emphasizing an important paracrine role in testicular function.
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